Vehicle-brake.



No. 684,259. Patented Oct. 8, |90l. B. JANNEY.

VEHICLE BRAKE.

(Application 1.11 In. 5, 1901.)

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NITED STATES PATENT OFFICE.

REYNOLD JANNEY, OF KEENE, NENV HAMPSHIRE, ASSIGNOR TO STEAMOBILE COMPANYOF AMERICA, OF SAME PLACE.

VEHICLE-BRAKE.

SEECIFIGATION forming part of Letters Patent No. 684,259, dated October8, 1901.

Application filed March 5, 1901.

To all whom it may concern:

Be it known that I, REYNOLD JANNEY, a citizen of the UnitedStates,residing at Keene, in the county of Cheshire and State of NewHampshire, have invented a new and useful Vehicle-Brake, of which thefollowing is a specification.

This invention relates to that class of brakes which are employed onautomobiles or similar vehicles; and the especial object of thisinvention is to provide a construction of strapbrake which will applypressure substantially equally around the entire periphery of abrake-disk.

To this end this invention consists of the parts and combinations ofparts as hereinafter described, and more particularly pointed out in theclaims at the end of this specification.

In the accompanying drawings, Figure 1 is a side view, partially brokenaway, of a vehicle provided with a brake constructed according to thepresent invention, and Fig. 2 is a transverse sectional view of thesame.

In that class of brakes which are used on automobiles or similarvehicles and which employ flexible rings or brake-straps-it hasheretofore been customary either to secure one end of the'brake-strap infixed position, or else it has been customary to simultaneously drawboth ends of the brake-strap toward each other by means of a rock-shaftor other operating connection occupying a fixed position with relationto the brake-disk. In setting, or applying a strapbrake in either ofthese two ways it will be seen that the greatfart-her side of thebrake-disk and that th Serial No. 49,783- (No model.)

brake-disk to permit pressure to be applied substantially equally aroundthe entire periphery of said brake-disk.

Referring to the accompanying drawings and in detail, A designates thevehicle-body; B, one of the front wheels; O, the rear wheels; and E thesupporting-frame, which is usually made out of bicycle-tubing or similarmaterial. These parts may be of the ordinary or approved constructionand need not be herein described at length. The rear wheels 0 arefastened on a rear axle, journaled in bearings carried by the frameworkE, and'the rear axle maybe made in sections coupled together byequalizing-gearing, and power may be applied to the rear axle in any ofthe ordinary manners, not necessary to herein show or describe atlength.

Supported on the rear axle D is a brakedisk 10, which may be connectedto or form part of the driven sprocket, which is operated from thedriving-motor of the machine through a drive-chain, or said disk mayform part of the equalizing'gear employed in this class of vehicles, andmounted on the brakedisk 10 is a brake-strap 11. The brake-strap 11 isconnected at its ends to the studs or fingers of a fork-piece 12. Thefork-piece 12 is carried by or formed integrally with an operatingrock-shaft 13, and extending up from the opposite end of the rock-shaft13 is an arm 14, connected by a link 15 to a foot-piece 16 in theordinary manner. By means of this construction it will be seen that whentherock-shaft 13 is turned or operated the award or past each other,

est pressure or tension will be applied to thgiends of the brake-strap11 will be drawn togreatest amount of wear will, therefore, be

concentrated at this point.

The especial object of my invention is,

' therefore,to provide a strap-brake which may be tightened equallysubstantially around the entire periphery of its brake-disk, so as toequalize the pressure at all points thereon. To accomplish this object,a vehicle-brake constructed according to my present invention comprisesa brake-disk with a brakestrap encircling the same and an operatingconnection or rock-shaft which is connected to tighten the brake-strapand is mounted so that it can move toward and away from the brake-strapupon the brake-disk 10. Instead, however, of mounting the rock-shaft 13in bearings which are carried with respect to the brake-disk 10, therock-shaft is preferably mounted in bearings which permit the same tomove toward and away from the brake-disk, so as to adjust itself toequalize the pressure substantially around the entire so as to tightenthe periphery of the brake-disk. As herein illustrated, one hearing orbox 17 of the rockshaft 13 may be secured rigidly to the framework E.The rock-shaft 13 fits comparatively loosely in its bearing or box 17,so as to permit a slight oscillation or swinging mo tion of the oppositeend thereof, and the other bearing 18 of the rock-shaft is preferablypivotally connected to brackets 19 on the frame, so that by means ofthis construction I am enabled to apply an equal braking-pressure aroundsubstantially the entire periphery of the brake-disk 10 withoutconcentrating the wear on the brake-strap and without the liability ofthe brake-strap breaking at the point of greatest pressure when a heavybraking action is necessary.

I am aware that many changes may be made in applying my brake tovehicles by those who are skilled in the art and that differentconstructions may be employed for providing the swinging motion of theoperating rock-shaft. I do not wish, therefore, to be limited to theconstruction I have herein shown and described; but

What I do claim, and desire to secure by Letters Patent of the UnitedStates, is-- 1. Thecombinationofabrake-disk,abrakestrap encircling thebrake-disk, a rock-shaft connected to tighten the brake-strap, and meansfor supporting the rock-shaft so that it may be moved toward and awayfrom the brake-disk to apply pressure equally, substantiallyaround theentire periphery thereof, substantially as described.

2. The combination of a supporting-framework, a rear axle journalcdtherein, a brakedisk carried by said axle, a brake-strap encircling thebrake-disk, and a rock-shaft supported by said framework so as to movetoward and away from the brake-disk to apply pressure substantiallyequally around the entire periphery thereof, substantially as described.

3. The combination of a brakedisk,a brakestrap encircling thebrake-disk, a fork-piece connected to both ends of the brake-strap, arock-shaft carrying said piece, bearings for supporting said rock-shaftso that it may move toward and away from the brake-disk,

and foot-controlled connections for operating said rock-shaft to applypressure substan-V tially equally around the entire periphery of' ss'faxle, a brake-disk thereon, a brake-strap en- V circling saidbrake-disk, a rock-shaft having an operating-piece connected to the endsof the brake-strapat one end, and an upwardlyextending arm at itsopposite end, bearings for said rock-shaft, one of which is securedrigidly to the frame, and the other of which is pivotallysupported, afoot-piece, and a link connecting said foot-piece with the arm of the Vrock-shaft to apply pressure equally around substantially the entireperiphery of the brake-disk, substantially as described.

In testimony whereof I have hereunto set my hand in the witnesses.

presence of two subscribing REYNOLD JANNEY.

\Vitnesses:

W. L. MAsoN, C. -L. STURTEVANT.

